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Finding the Fourth Proportional to 33,891.20, 50,836.80 and 15,423.20

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Solution

The fourth proportional to 33,891.20, 50,836.80 and 15,423.20 is: 23,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,891.20 : 50,836.80 = 15,423.20 : x
  2. Step 2: Convert to fraction form
    33,891.20/50,836.80 = 15,423.20/x
  3. Step 3: Cross multiply
    33,891.20x = 50,836.80 × 15,423.20
  4. Step 4: Simplify right side
    33,891.20x = 784,066,133.76
  5. Step 5: Solve for x
    x = 784,066,133.76/33,891.20
  6. Step 6: Final answer
    x = 23,134.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.